Arne township is located in Benson County, North Dakota. Arne township has a 2026 population of 42. Arne township is currently declining at a rate of -2.33% annually and its population has decreased by -8.7% since the most recent census, which recorded a population of 46 in 2020.
The median age in Arne township is 48.8 years: 47.3 years for males, and 53.3 years for females. For every 100 females there are 120.0 males.
Data after 2023 is projected based on recent change
Overall: 48.8 years
Female: 53.3 years
Male: 47.3 years
There are 22 adults, (7 of whom are seniors) in Arne township.
Female: 10 (45.5%)
Male: 12 (54.5%)
The racial composition of Arne township includes 100% White, and smaller percentages for and multiracial populations.
| Race | Population ↓ | Percentage (of total) |
|---|---|---|
| White | 22 | 100% |